JP5041727B2 - Elevator earthquake monitoring control device and its earthquake monitoring control system - Google Patents

Description

  The present invention relates to an earthquake monitoring and control apparatus that predicts long-period ground motion and protects an elevator installed in a high-rise / super-high-rise building (hereinafter collectively referred to as a high-rise building) and a monitoring control system thereof.

  Conventionally, in order to grasp the effects of earthquakes on high-rise buildings to be monitored, it is necessary to place P at appropriate locations on the monitored buildings (for example, the pit bottom in the elevator hoistway, the machine room above the hoistway, the hoistway wall, etc.) Wave seismic detector and S wave seismic detector are installed.

  P waves are called longitudinal waves or dense waves, and are small shock waves that first reach the building from the epicenter due to ground collapse, etc., through the bedrock. The S wave is called a transverse wave, and is a large shaking wave that travels through the rock after the P wave arrives. The P wave differs slightly depending on the density and rigidity of the ground (a kind of stiffness), but the speed of the P wave is said to be about 6 km per second, and the S wave is said to be 3.5 km per second. These P waves and S waves are both called surface waves, but the P waves travel at a speed nearly twice that of the S waves.

  By the way, as an earthquake countermeasure for conventional elevators, as described above, the above-mentioned earthquake detector is installed at an appropriate location of the elevator equipment, and when the high-rise building shakes due to the occurrence of the earthquake, the influence of the elevator equipment is taken into consideration. When a predetermined level (for example, a predetermined signal level between magnitude M4 and less than M6 (small / medium earthquakes), etc.) is set and a vibration exceeding the predetermined level occurs, the earthquake detector determines that an earthquake has occurred and The operation control command is given as desired to take preventive measures against earthquakes.

  However, the above-mentioned earthquake countermeasures are intended to detect the earthquake motion mainly from the amplitude level of the shock wave transmitted from the epicenter to the rock and the like, and are merely a countermeasure for the elevator against a temporary shock caused by a short period.

  However, not only P waves and S waves but also Rayleigh waves and Love waves having a longer period and a larger amplitude than those P waves and S waves are generated in the ground motion. When the movements of Rayleigh waves and love waves are combined, undulations are created on the surface.

  Therefore, when such a long-period ground motion occurs, the operation control command is sent to the elevator in response to the detection signal from the ground motion detector after the high-rise building has already shaken under the influence of the ground motion. When it was received, the elevator had already been affected by the shaking of the high-rise building. In particular, when long-period ground motion occurs, the higher the building, the greater the shaking, and the elevator may stop halfway or the elevator sway may damage the elevator equipment or building equipment.

  In addition, there is a possibility that the user cannot be removed from the car or is greatly affected by a power failure.

The present invention has been made in view of the above circumstances, and an earthquake monitoring and control apparatus for an elevator that gives an optimum operation control command for avoiding danger to the elevator as soon as a long-period seismic wave arrives, and its earthquake monitoring An object is to provide a control system.

In order to solve the above problems, an elevator earthquake monitoring and control apparatus according to the present invention includes a seismic wave information collecting means for collecting seismic wave information observed at a plurality of seismic observation points scattered over a wide area, and Based on the frequency analysis of the acceleration signal included in the seismic wave information for each seismic observation point collected by the seismic wave information collecting means, and the individual analysis processing means to obtain the seismic wave frequency and peak level signal, and the frequency analysis results of multiple seismic observation points Long-period ground motion prediction means for predicting long-period ground motion with directionality and spread from the obtained seismic frequency and peak level signal, and the effect of the elevator of the building to be managed from the predicted direction of movement of the long-period ground motion A means for predicting presence / absence, and a control instruction notifying means for notifying an operation control instruction to an elevator control device of a building predicted to be affected It is formed.

The elevator seismic monitoring and control system according to the present invention includes a plurality of seismic observation points that transmit acceleration signals of seismic waves observed by seismometers installed across a wide area and an elevator. a plurality of buildings of interest, the the position information and the impact reference data and the storage of each building, each of the acceleration signal transmitted from the seismic stations frequency analysis, the level of the seismic stations that are this analysis The long-period ground motion is predicted from the signal connection and analysis frequency, and the elevator in the building is influenced from the directionality and frequency of the predicted long-period ground motion and the stored location information and influence reference data of each building. A seismic monitoring and control device that predicts the possibility of transmission and sends an operation control command for earthquake countermeasures to the elevator evacuation device of the building before the seismic wave arrives Example was a configuration.

ADVANTAGE OF THE INVENTION According to this invention, before the earthquake motion of a long period arrives at the building used as a monitoring object, the earthquake monitoring control apparatus of the elevator which can give the optimal operation control command for danger avoidance to an elevator early, and The earthquake monitoring control system can be provided.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a block diagram showing an embodiment of an elevator earthquake monitoring control system according to the present invention.
The seismic monitoring and control system includes an elevator control device 2 that controls the operation of an elevator installed in a high-rise building 1 and seismic wave observation points a1 to an, b1 to bn,. Earthquakes that serve as a core base for earthquake monitoring that collects and analyzes seismic wave information observed at each seismic wave observation point a, b,... and predicts the effects of elevators caused by long-period ground motions .. And the information transmission line 4 connecting the seismic observation points a, b,...

  As an elevator, the hoisting machine and the elevator control device 2 described above are installed in a machine room above the hoistway formed integrally with the high-rise building 1 to be managed or an appropriate place in the hoistway. A wire rope is stretched around. A car is suspended from one end of the wire rope, and a counterweight is suspended from the other end of the wire rope. The car moves up and down along a pair of guide rails installed in the hoistway as the hoisting machine rotates.

  In general, the elevator control device 2 drives and controls the hoisting machine so as to operate at a predetermined traveling speed to the destination floor according to the registration of the car call or the hall call, but the detection level due to the occurrence of the earthquake is constant. When the level is exceeded, control is switched to the control operation based on the earthquake disaster, the car is driven to the nearest floor, the user is lowered, and then the control is stopped to the nearest floor.

  Each of the seismic wave observation points a, b,... Stores a seismic detector that detects seismic motion, a predetermined identification data ID, and the ID, time data, and acceleration signal generated by seismic motion detected by the seismic detector. And a communication control unit that transmits the seismic wave information to the earthquake monitoring control device 3 via the information transmission line 4.

  The information transmission line 4 may be either wired communication or wireless communication. However, in the case of wired communication, it is desirable to use a dedicated line from the viewpoint of urgency.

  The seismic monitoring control device 3 receives the seismic wave information sent from each seismic wave observation point a, b,..., And if necessary, a communication interface 11 having a function of converting into a signal form handled by the seismic monitoring control device 3; An input unit 12 such as a keyboard and a mouse for inputting information necessary for monitoring control, a program data storage unit 13 for storing program data, and seismic wave information of each seismic observation point a, b,. The seismic analysis processing unit 14 composed of a CPU for analysis processing, the display unit 15 for displaying the contents of analysis results and analysis results, and the seismic wave information of each seismic observation point a, b,. And database 15.

As shown in FIG. 2, the earthquake analysis processing unit 14 collects the seismic wave information at each of the seismic wave observation points a, b,... And stores it in the seismic wave information storage area 15a of the database 15, and this collection memory. Individual analysis processing means 21 for performing frequency analysis by Fourier transform based on acceleration data included in the seismic wave information for each seismic wave observation point a, b,... Collected by means 14A, and acquiring frequency and seismic wave level signals; Based on the seismic wave frequency and the seismic wave level signal analyzed by the analysis processing means 21, a long-period ground motion prediction means 22 for predicting a long-period ground motion having directionality and spread like a Rayleigh wave or a Love wave, and these processing means 21 , 22 Based on the processing result by the seismic wave form (the magnitude of the seismic wave) and shadow on the elevator of the high-rise building 1 to be managed If it is determined on the basis of the impact predicting means 23 and the impact determining means 23 that the elevator of the high-rise building 1 is affected, the elevator control device for the high-rise building 1 before the seismic wave reaches the high-rise building 1 2 includes control command notification means 24 for transmitting an operation control command signal associated with an earthquake disaster.

  The Rayleigh wave and the Love wave described above are both types of surface waves, but the Rayleigh wave moves while oscillating in a circle with respect to the traveling direction of the surface wave, and the Love wave is the traveling direction of the surface wave. It is known to move while vibrating left and right.

  As described above, the database 15 is a seismic information storage area 15a for storing seismic information, and individual information for storing ID, position information (latitude / mild information), and individual analysis result information for each seismic observation point a, b,. Stores storage information such as a storage area 15b (see FIG. 3A), a building name of a high-rise building 1 to be managed, position information (latitude / mild information, influence level, building natural period (or building natural frequency), etc. A target data storage area 15c (see FIG. 3B) and other processing result information storage area 15d are provided.

Next, the operation of the seismic monitoring and control system configured as described above will be described.
First, each seismic observation point a, b,... Has seismic wave information such as an acceleration signal including identification data ID and time data for each predetermined period when the observed acceleration signal reaches a predetermined level signal at which transmission timing is reached. Is continuously transmitted to the earthquake monitoring control device 3.

  When the communication interface 11 of the earthquake monitoring control device 3 receives the seismic wave information transmitted from each of the seismic observation points a, b,..., The seismic wave information collecting / storing means 20 is stored in the seismic wave information storage area 15a of the database 15 in, for example, time series. It memorizes sequentially.

  The seismic analysis processing unit 14 always executes a series of processes as shown in FIG. 4 independently of the process of the seismic wave information collecting / storing means 20 independently based on the program data. That is, the individual analysis processing means 21 of the earthquake analysis processing unit 14 always determines whether or not the seismic wave information is received (S1), and when it is determined that there is reception, the analysis time t = T, i = 1 in the counter memory. (S2, S3), frequency analysis is performed on the acceleration signal for each ID representing one seismic observation point stored in time series in the seismic information storage area 15a, and the seismic frequency and seismic peak level signal are obtained. After calculating and storing, for example, in the corresponding area of the corresponding ID in the individual information storage area 15b shown in FIG. 3A (S4), it is determined whether or not the analysis set time T has elapsed (S5). If the analysis set time T has not yet passed, i = 1 is incremented by +1 (S6), frequency analysis is performed on the acceleration signal of the ID representing the next seismic observation point, and within the analysis set time T Performs frequency analysis of a large number of seismic observation points a, b,. As a result, a plurality of seismic wave frequencies and seismic peak level signals may be acquired at the same seismic observation point.

  When the analysis set time T elapses, the long-period ground motion prediction means 22 is executed. The long-period ground motion prediction means 22 connects the seismic wave peak level signals of the seismic observation points a, b,... (S7) and considering the acquired frequency, it is determined whether or not it is a long-period ground motion (S8). Usually, for example, a long-period ground motion of about 6 to 8 seconds is close to the natural period of the high-rise building 1, and large shaking occurs depending on the ground of the building and other conditions. As shown in FIG. 3B, it differs depending on the building.

  FIG. 5 shows the situation of each seismic wave. 31 is the epicenter, 32-1 is the P wave, 32-2 is the S wave, 32-3 is the Love wave, and 34-4 is the moving state of the Rayleigh wave. 2a is the car in the hoistway. .

Therefore, if the long-period ground motion prediction means 22 does not determine that the long-period ground motion has occurred, the process proceeds to step S9, and the process proceeds to individual analysis of the remaining seismic observation points, or returns to step S3, and the same processing is repeated again. Execute.

On the other hand, when it is determined in step S8 that the long-period ground motion is detected, the influence predicting means 23 is executed to predict the influence of the elevator of the high-rise building 1 to be managed. That is, based on the moving directionality of the long-period ground motion obtained by the long-period ground motion prediction unit 22, the impact prediction unit 23 determines from the position information of each high-rise building 1 shown in FIG. The buildings 1 are sequentially extracted (S10), y = 1 is set in the counter, and the presence or absence of influence is predicted (S11 to S13).
That is, the impact prediction means 23 determines whether the seismic wave level of the long-period ground motion reaches a predetermined impact level or is approximately equal to the natural period (or natural frequency) of the high-rise building 1, or at least the latter judgment or both judgments. It carries out and predicts the presence or absence of the influence of the elevator in the high-rise building 1 concerned. Then, all the buildings 1 are checked for the presence or absence of influence (S14).

  Incidentally, when the period of the long-period ground motion and the natural period of the high-rise building 1 are equal, a resonance phenomenon occurs, the shaking of the high-rise building 1 gradually increases, and a resonance state occurs. Note that the resonance timing of the high-rise building 1 varies depending on the magnitude and intensity of the long-period ground motion. And if the high-rise building 1 causes a resonance phenomenon and shakes greatly, the vibration propagates to the wire rope, and the vibrations come and go between the wire rope starting end and the wire rope terminating end, and the amplitude and period gradually When it increases and approaches the natural period of the high-rise building 1, the car 2a shakes greatly.

  Therefore, after predicting whether or not there is an elevator effect in the high-rise building 1, an operation control command is transmitted to the elevator control device 2 of the high-rise building 1 that has been affected before the earthquake wave arrives. The operation control command is repeatedly transmitted to the elevator control device 2 of the building 1 (S15 to S18).

  In the elevator control device 2 of each building 1 that has received the operation control command from the earthquake monitoring control device 3, based on the operation control command from the earthquake monitoring control device 3, switch to the control operation at the time of an earthquake disaster, to the nearest floor Stop, head down the elevator user, stop at the floor, and wait for the arrival of seismic waves.

  Therefore, according to the embodiment as described above, a long-period ground motion in which the high-rise building 1 is greatly shaken is predicted, and the building where the elevator affected by the moving direction of the seismic wave is specified, and the seismic wave reaches the building. Since the operation control command is sent out properly before the start of the operation, it is possible to avoid large shaking of the car, and the user can be locked in the car or restored by promptly moving the user to the nearest floor. You can improve the situation of waiting until.

  In the above embodiment, after predicting the long-period ground motion, the building where the elevator affected by the moving direction of the seismic wave is specified, and the operation control command is automatically transmitted to the elevator control device 2 of the corresponding building. However, for example, the map information obtained by plotting the seismic observation points a, b,... And the monitored building 1 is displayed on the display unit 15, and the seismic observation points a, b,. By displaying the plots sequentially in different colors, the monitor may determine the directionality, identify the building where the affected elevator is installed, and sequentially send operation control commands.

  Furthermore, after extracting the building where the affected elevator is installed by the influence predicting means 23, the building is displayed on the map of the display unit 15 with the building name and color change of the building 1 so that the vicinity of the building 1 is displayed. It is also possible to notify the maintenance staff or a maintenance standby place near the site.

  In addition, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.

The block diagram which shows one Embodiment of the earthquake monitoring control system which concerns on this invention. The functional block diagram which shows the principal part structure of the earthquake monitoring control apparatus which concerns on this invention. The figure which shows an example of the data memorize | stored in the database of FIG. The flowchart explaining an example of operation | movement of an earthquake monitoring control apparatus. The figure showing the propagation state of various seismic waves.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... High-rise building 1, a1, ..., an, b1, ..., bn, c1, ..., cn, d1, ..., dn ... Earthquake observation point, 2 ... Elevator control device, 2a ... Ride car, 3 ... Earthquake monitoring control Device: 14 ... Earthquake analysis processing unit, 15 ... Database, 20 ... Earthquake wave information collection / storage means, 21 ... Long-period earthquake motion prediction means, 22 ... Impact prediction means, 23 ... Control command notification means, 31 ... Earthquake source, 32-1 ... P wave, 32-2 ... S wave, 32-3 ... Love wave, 34-4 ... Rayleigh wave.

Claims (4)

In an elevator seismic monitoring and control system that protects elevators installed in buildings from seismic waves generated at long distances,
Seismic wave information collecting means for collecting seismic wave information observed at a plurality of seismic stations scattered over a wide area,
Individual analysis processing means for analyzing the frequency of the acceleration signal included in the seismic wave information for each seismic observation point collected by this seismic wave information collecting means to obtain the frequency and peak level signal of the seismic wave ,
Long-period ground motion prediction means for predicting long-period ground motion with directionality and spread from seismic frequency and peak level signals obtained from frequency analysis results of a plurality of seismic observation points;
Means for predicting the presence / absence of the elevator of the building to be managed from the predicted direction of movement of the long-period ground motion,
An elevator seismic monitoring and control device comprising control command notification means for notifying an elevator control device of a building that is predicted to have an operation control command. The long-period ground motion prediction means finds a long-period seismic wave having a moving direction of the seismic wave from the connection and frequency of peak level signals obtained from frequency analysis results of a plurality of seismic observation points . Elevator earthquake monitoring and control device. The means for predicting the presence / absence of the elevator effect in each building is to select the building whose effect is to be predicted from the moving direction of the seismic wave and the position of each building in which the natural period of each building is defined in advance. 3. The elevator earthquake monitoring and control apparatus according to claim 1 or 2 , wherein the presence or absence of an elevator is predicted from the natural period of the selected building and the period of the seismic wave. In an elevator seismic monitoring and control system that protects elevators installed in buildings from seismic waves generated at long distances,
Each seismic station that transmits acceleration signals of seismic waves observed with seismometers installed across a wide area,
Multiple managed buildings with elevators,
The position information and the impact reference data of each building is stored, the acceleration signal frequency analysis sent from the seismic stations, the length from the connection and analysis frequency of the level signal for each seismic stations that are this analysis Along with predicting the periodic ground motion, predicting the possibility of affecting the elevator in the building from the directionality and frequency of the predicted long-period ground motion and the stored location information and influence reference data of each building. An earthquake monitoring control system for an elevator, comprising: an earthquake monitoring control device that transmits an earthquake control operation control command to the elevator control device of the building before the arrival of the building.

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